What does a meta-analysis do?
A) summarizes the average effect size across studies
B) examines the size of an effect in a large sample
C) uses a long-term longitudinal study to determine the strength of effects
D) determine if there are significant differences between groups

Question

Quizplus · Accepted Answer

A meta-analysis is a statistical technique that summarizes the results of multiple studies on a particular topic or question. It calculates an overall effect size, which is a measure of the strength of the relationship between two variables. By pooling together the data from multiple studies, a meta-analysis can provide a more robust estimate of the true effect size than any individual study can.

What Does a Meta-Analysis Do